Validate Host System

The libvirt package provides a validation utility that checks whether a system can function correctly as a virtualization host. The utility can check for several virtualization capabilities, but KVM functionality is covered by testing the qemu virtualization type.

1. Run the virt-host-validate qemu command to validate the host system:

   sudo virt-host-validate qemu

   If all checks return a PASS value, the system can host guest VMs. If any of the tests fail, a reason is provided and information is displayed on how to resolve the issue, if such an option is available.

   Note:

   If the following message is displayed, the system isn't capable of functioning as a KVM host:

   QEMU: Checking for hardware virtualization: FAIL (Only emulated CPUs are available, performance will be significantly limited)

   If you try to create or start a VM on a host where this message is displayed, the action is likely to fail.